Peony and iris price list : 1924 - W.J. Engle & Son; Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Dayton, Ohio, W.J. Engle & Son, 1924, 1924)
https://www.biodiversitylibrary.org/bibliography/130587
Keywords: Bulbs (Plants)|Dayton|Irises (Plants)|Nursery stock|Ohio|Peonies|Prices|Roots|